Anaplectus De Coninck & Schuurmans Stekhoven, 1933

Bacterial-feeding nematodes.

Anaplectus has a muscular tubular mouth for engulfing bacteria and no spear.

Bactivorous nematodes have tubular mouths and graze on bacteria by swallowing them or scraping them from soil substrates using structures on top of their head. Grazing of bacteria increases the rate of decomposition of the chemical compounds in organic matter (carbon and nitrogen mineralisation) in soil. There is also evidence that grazing on bacteria can positively affect the plant root growth. These animals have generation times ranging from a few days to a week, which is advantageous for colonising new habitats.

(Source: Global Soil Biodiversity Atlas|Chapter II – Diversity of soil organisms)

More pictures of Anaplectus porosus Allen & Noffsinger, 1968:

Anaplectus porosus: female body
Anaplectus porosus: female body

Anaplectus porosus: female body
Anaplectus porosus: female body

Anaplectus porosus: pharynx region
Anaplectus porosus: pharynx region

Anaplectus porosus: ventral amphid opening
Anaplectus porosus: ventral amphid opening

Anaplectus porosus: stoma & amphid
Anaplectus porosus: stoma & amphid

Anaplectus porosus: ventral body pores in anterior body
Anaplectus porosus: ventral body pores in anterior body
Anaplectus porosus: dorsal body pores in anterior body
Anaplectus porosus: dorsal body pores in anterior body
Anaplectus porosus: valve and cardia
Anaplectus porosus: valve and cardia
Anaplectus porosus: lateral field and body pores
Anaplectus porosus: lateral field and body pores
Anaplectus porosus: middle and posterior parts
Anaplectus porosus: middle and posterior parts
Anaplectus porosus: vulva, vagina and uterus with egg
Anaplectus porosus: vulva, vagina and uterus with egg
Anaplectus porosus: tail region with anus and caudal glands
Anaplectus porosus: tail region with anus and caudal glands
Anaplectus porosus: tail region with papillae and spinneret
Anaplectus porosus: tail region with papillae and spinneret

More pictures of Anaplectus granulosus (Bastian, 1865):

Anaplectus granulosus: female anterior body part
Anaplectus granulosus: female anterior body part
Anaplectus granulosus: head region with small setae and body pores
Anaplectus granulosus: head region with small setae and body pores
Anaplectus granulosus: head region with amphid opening (small slit) and body pores
Anaplectus granulosus: head region with amphid opening (small slit) and body pores
Anaplectus granulosus: posterior part of pharynx
Anaplectus granulosus: posterior part of pharynx
Anaplectus granulosus: posterior part of the pharynx with excretory duct
Anaplectus granulosus: posterior part of the pharynx with excretory duct
Anaplectus granulosus: vulva, vagina and uterus
Anaplectus granulosus: vulva, vagina and uterus
Anaplectus granulosus: tail region with anus and caudal glands
Anaplectus granulosus: tail region with anus and caudal glands
Anaplectus granulosus: tail region with papillae and spinneret
Anaplectus granulosus: tail region with papillae and spinneret

More pictures of Anaplectus grandepapillatus (Ditlevsen, 1928) Andrássy, 1973:

Anaplectus grandepapillatus: male body
Anaplectus grandepapillatus: male body

Anaplectus grandepapillatus: head region with amphid opening (small slit)
Anaplectus grandepapillatus: head region with amphid opening (small slit)

Anaplectus grandepapillatus: head region with stoma and anterior part of pharynx
Anaplectus grandepapillatus: head region with stoma and anterior part of pharynx

Anaplectus grandepapillatus: posterior part of pharynx
Anaplectus grandepapillatus: posterior part of pharynx

Anaplectus grandepapillatus: tubular supplements
Anaplectus grandepapillatus: tubular supplements

Anaplectus grandepapillatus: tubular supplements and spiculum
Anaplectus grandepapillatus: tubular supplements and spiculum

Anaplectus grandepapillatus: spiculum, tubular supplements and caudal glands
Anaplectus grandepapillatus: spiculum, tubular supplements and caudal glands
Anaplectus grandepapillatus: tail region with spiculum, gubernaculum and spinneret
Anaplectus grandepapillatus: tail region with spiculum, gubernaculum and spinneret
Anaplectus grandepapillatus: tail region with spinneret and papillae
Anaplectus grandepapillatus: tail region with spinneret and papillae

(Click on the pictures for an enlargement, © Laboratory of Nematology/Pictures: Hanny van Megen)